Remove #include <exception> line from offset_utils.hpp

[oleksandr-pavlyk]

Removed #include <exception> line from "offset_utils.hpp".

The file uses none of the functionality defined in that header.

• Have you provided a meaningful PR description?
• Have you added a test, reproducer or referred to an issue with a reproducer?
• Have you tested your changes locally for CPU and GPU devices?
• Have you made sure that new changes do not introduce compiler warnings?
• Have you checked performance impact of proposed changes?
• Have you added documentation for your changes, if necessary?
• Have you added your changes to the changelog?
• If this PR is a work in progress, are you opening the PR as a draft?

[github-actions]

Deleted rendered PR docs from intelpython.github.com/dpctl, latest should be updated shortly. 🤞

[github-actions]

Array API standard conformance tests for dpctl=0.19.0dev0=py310hdf72452_62 ran successfully.
Passed: 894
Failed: 1
Skipped: 119

[github-actions]

Array API standard conformance tests for dpctl=0.19.0dev0=py310hdf72452_63 ran successfully.
Passed: 894
Failed: 1
Skipped: 119

[coveralls]

coverage: 87.907%. remained the same
when pulling 939ba60 on remove-include-exception
into a6aae94 on master.